Power domain controller, control method, and vehicle

Abstract

The application provides a power domain controller, a control method and a vehicle, and relates to the technical field of vehicles.The power domain controller comprises a control chip and a dual-channel signal acquisition circuit used for acquiring analog signals and PWM signals output by an accelerator pedal, wherein the control chip is connected with the dual-channel signal acquisition circuit, and is used for obtaining an opening degree signal of the accelerator pedal according to the output of the other channel signal acquisition circuit when it is detected that one channel signal acquisition circuit is abnormal, and controlling a power motor of the vehicle according to the opening degree signal.The application integrates the dual-channel signal acquisition circuit used for acquiring analog signals and PWM signals output by the accelerator pedal in the power domain controller, so that the opening degree signal of the accelerator pedal can be obtained according to the output of the other channel signal acquisition circuit when one channel signal acquisition circuit is abnormal, and the reliability of obtaining the opening degree signal of the accelerator pedal is improved.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a power domain controller, control method, and vehicle. Background Technology

[0002] As automobiles acquire more and more functions, the number of Electronic Control Units (ECUs) has increased dramatically. Currently, to meet the needs of this surge in ECUs, multiple functionally similar and separate ECUs are integrated into a single processor hardware platform with higher performance than the ECUs, forming Domain Control Units (DCUs), such as powertrain domain controllers, body domain controllers, and infotainment domain controllers.

[0003] In related technologies, the power domain controller integrates an accelerator pedal analog signal acquisition circuit. The power domain controller acquires the accelerator pedal opening signal through this circuit and controls the vehicle's power motor based on the opening signal. However, acquiring the opening signal in this way suffers from poor reliability. Summary of the Invention

[0004] This application provides a power domain controller, control method, and vehicle to address the problem of low reliability in related technologies for obtaining accelerator pedal opening signals.

[0005] In a first aspect, this application provides a power domain controller, including: a control chip and a dual-channel signal acquisition circuit, the dual-channel signal acquisition circuit being used to acquire the analog signal and the pulse width modulation (PWM) signal output from the accelerator pedal, respectively; the control chip, connected to the dual-channel signal acquisition circuit, is used to obtain the accelerator pedal opening signal based on the output of the other signal acquisition circuit when an abnormality is detected in one of the signal acquisition circuits, and to control the vehicle's power motor based on the opening signal.

[0006] In one possible implementation, the signal acquisition circuit includes a filtering component for signal filtering, wherein the input terminal of the filtering component is the input terminal of the signal acquisition circuit, and the output terminal of the filtering component is connected to the control chip.

[0007] In one possible implementation, the filtering components for filtering the analog signal include: a first capacitor, a second capacitor, a third capacitor, a first resistor, a second resistor, and a third resistor; the first terminal of the first capacitor is connected to the first terminal of the first resistor to form the input terminal of the signal acquisition circuit for acquiring the analog signal; the second terminal of the first resistor, the first terminal of the second resistor and the second capacitor connected in parallel, and the first terminal of the third resistor are connected; the second terminal of the third resistor is connected to the first terminal of the third capacitor to form the output terminal of the signal acquisition circuit for acquiring the analog signal; the second terminal of the first capacitor, the second terminal of the second resistor and the second capacitor connected in parallel, and the second terminal of the third capacitor are all grounded.

[0008] In one possible implementation, the filtering components for filtering the PWM signal include: a transient suppression diode, a fourth capacitor, a fifth capacitor, a fourth resistor, and a fifth resistor; the first terminals of the transient suppression diode, the fourth resistor, the fourth capacitor, and the fifth resistor are connected to form the input terminal of a signal acquisition circuit for acquiring the PWM signal; the second terminal of the fifth resistor is connected to the first terminal of the fifth capacitor to form the output terminal of the signal acquisition circuit for acquiring the PWM signal; the second terminals of the transient suppression diode, the fourth capacitor, and the fifth capacitor are all grounded; the second terminal of the fourth resistor is connected to a power supply.

[0009] In one possible implementation, when both signal acquisition circuits are in normal operation, the control chip is also used to: obtain the accelerator pedal opening signal based on the output of the dual signal acquisition circuits; and control the vehicle's power motor based on the opening signal.

[0010] In one possible implementation, the control chip is also used to: determine whether the analog signal and PWM signal output by the dual signal acquisition circuits respectively meet the preset mapping relationship; if they do, determine that the output that meets the accuracy requirements is the accelerator pedal opening signal.

[0011] In one possible implementation, the control chip is also used to: output a prompt message if the condition is not met, the prompt message being used to indicate accelerator pedal malfunction and limited vehicle power.

[0012] Secondly, this application provides a control method applied to a control chip in a power domain controller as described in the first aspect above. The control method includes: acquiring the output of a dual-channel signal acquisition circuit in the power domain controller; obtaining an accelerator pedal opening signal based on the output of the dual-channel signal acquisition circuit; and controlling the vehicle's power motor based on the opening signal.

[0013] In one possible implementation, the accelerator pedal opening signal is obtained based on the output of the dual-channel signal acquisition circuit, including: determining whether the analog signal and PWM signal output by the dual-channel signal acquisition circuit respectively meet a preset mapping relationship; if they do, the output that meets the accuracy requirements is determined to be the accelerator pedal opening signal.

[0014] In one possible implementation, the control method further includes: if the condition is not met, outputting a prompt message to indicate accelerator pedal malfunction and limited vehicle power.

[0015] In one possible implementation, the control method further includes: when an abnormality is detected in one of the signal acquisition circuits, obtaining the accelerator pedal opening signal based on the output of the other signal acquisition circuit, and controlling the vehicle's power motor based on the opening signal.

[0016] Thirdly, this application provides a vehicle, including a vehicle body and a power domain controller as described in the first aspect above.

[0017] Fourthly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions that, when executed by a processor, are used to implement the control method provided in the second aspect.

[0018] Fifthly, embodiments of this application provide a computer program product, including a computer program that, when executed by a processor, implements the control method provided in the second aspect.

[0019] This application provides a power domain controller, control method, and vehicle. The power domain controller includes a control chip and a dual-channel signal acquisition circuit for acquiring analog signals and PWM signals output from the accelerator pedal. The control chip is connected to the dual-channel signal acquisition circuit and, when an anomaly is detected in one of the signal acquisition circuits, obtains the accelerator pedal opening signal based on the output of the other signal acquisition circuit, and controls the vehicle's power motor based on the opening signal. This application, by integrating a dual-channel signal acquisition circuit for acquiring analog signals and PWM signals output from the accelerator pedal into the power domain controller, achieves the ability to obtain the accelerator pedal opening signal based on the output of the other signal acquisition circuit when one signal acquisition circuit malfunctions, thereby improving the reliability of acquiring the accelerator pedal opening signal. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0021] Figure 1This is a schematic diagram of the structure of a power domain controller provided in an embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the structure of a signal acquisition circuit for acquiring analog signals provided in an embodiment of this application;

[0023] Figure 3 This is a schematic diagram of the signal acquisition circuit for acquiring PWM signals provided in an embodiment of this application;

[0024] Figure 4 A schematic diagram of the circuit structure of any phase current acquisition circuit in the three-phase current acquisition circuit provided in the embodiments of this application;

[0025] Figure 5 A schematic flowchart illustrating a control method provided in an embodiment of this application;

[0026] Figure 6 This is a schematic diagram of the accelerator pedal opening signal acquisition strategy provided in an embodiment of this application.

[0027] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0028] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0029] In related technologies, the power domain controller integrates an accelerator pedal analog signal acquisition circuit. The power domain controller acquires the accelerator pedal opening signal through the analog signal acquisition circuit and controls the vehicle's power motor based on the opening signal. However, when the accelerator pedal analog signal acquisition circuit is in an abnormal state, it cannot acquire the opening signal, resulting in poor reliability.

[0030] Based on the problems existing in related technologies, the embodiments of this application integrate a dual-channel signal acquisition circuit for acquiring analog signals and PWM signals output by the accelerator pedal in the power domain controller. This enables the accelerator pedal opening signal to be obtained based on the output of the other signal acquisition circuit when one of the signal acquisition circuits malfunctions, thereby improving the reliability of acquiring the accelerator pedal opening signal.

[0031] The power domain controller provided in this application will be described in detail below with reference to specific embodiments.

[0032] Figure 1 This is a schematic diagram of the structure of a power domain controller provided in one embodiment of this application. Figure 1 As shown, the power domain controller includes: a control chip and a dual-channel signal acquisition circuit. The dual-channel signal acquisition circuit is used to acquire the analog signal and PWM signal output by the accelerator pedal, respectively. The control chip is connected to the dual-channel signal acquisition circuit and is used to obtain the accelerator pedal opening signal based on the output of the other signal acquisition circuit when an abnormality is detected in one of the signal acquisition circuits, and to control the vehicle's power motor based on the opening signal.

[0033] For example, a dual-channel signal acquisition circuit can be an analog signal acquisition circuit and a PWM signal acquisition circuit.

[0034] For example, the accelerator pedal can be a dual-output accelerator pedal, that is, one output is used to output an analog signal and the other output is used to output a PWM signal.

[0035] In one possible implementation, an analog signal acquisition circuit is used to acquire the analog signal output by the accelerator pedal, and a PWM signal acquisition circuit is used to acquire the PWM signal output by the accelerator pedal.

[0036] For example, the input terminal of the analog signal acquisition circuit is used to input the analog signal output by the accelerator pedal, and the output terminal of the analog signal acquisition circuit is connected to one pin of the control chip; the input terminal of the PWM signal acquisition circuit is used to input the PWM signal output by the accelerator pedal, and the output terminal of the PWM signal acquisition circuit is connected to another pin of the control chip.

[0037] It is understood that the power domain controller provided in this application embodiment integrates a vehicle controller, that is, after the control chip obtains the opening signal of the accelerator pedal, it can control the vehicle's power motor according to the opening signal.

[0038] It is understood that, in the power domain controller provided in this application embodiment, by integrating the vehicle controller and dual-channel signal acquisition circuit into the power domain controller, the amount of wiring harnesses and metal housings used can be reduced, thereby reducing the overall vehicle cost and the complexity of the vehicle wiring harness.

[0039] In this embodiment, the power domain controller includes a control chip and dual-channel signal acquisition circuits for acquiring analog signals and PWM signals output from the accelerator pedal, respectively. The control chip, connected to the dual-channel signal acquisition circuits, is used to obtain the accelerator pedal opening signal based on the output of the other signal acquisition circuit when an anomaly is detected in one of the signal acquisition circuits, and then control the vehicle's power motor based on the opening signal. This embodiment, by integrating dual-channel signal acquisition circuits for acquiring analog signals and PWM signals output from the accelerator pedal into the power domain controller, achieves the ability to obtain the accelerator pedal opening signal based on the output of the other signal acquisition circuit when one signal acquisition circuit malfunctions, thus improving the reliability of acquiring the accelerator pedal opening signal.

[0040] Optionally, the signal acquisition circuit includes a filtering component for signal filtering, wherein the input terminal of the filtering component is the input terminal of the signal acquisition circuit, and the output terminal of the filtering component is connected to the control chip.

[0041] For example, the filter assembly may include multiple capacitors with the same or different capacitance values, multiple resistors with the same or different resistance values, and transient suppression diodes, etc.

[0042] It should be noted that in the power domain controller provided in this application embodiment, the value of the corresponding component in the filtering component used for signal filtering is not limited, and can be determined according to the actual application requirements.

[0043] It is understandable that by performing signal filtering on the analog and PWM signals output from the accelerator pedal, the signal quality of the analog and PWM signals can be improved, thereby improving the sampling accuracy of the accelerator pedal opening signal.

[0044] Optionally, the filtering component for filtering the analog signal includes: a first capacitor, a second capacitor, a third capacitor, a first resistor, a second resistor, and a third resistor; the first terminal of the first capacitor is connected to the first terminal of the first resistor to form the input terminal of the signal acquisition circuit for acquiring the analog signal; the second terminal of the first resistor, the first terminal of the parallel connection of the second resistor and the second capacitor, and the first terminal of the third resistor are connected; the second terminal of the third resistor is connected to the first terminal of the third capacitor to form the output terminal of the signal acquisition circuit for acquiring the analog signal; the second terminal of the first capacitor, the second terminal of the parallel connection of the second resistor and the second capacitor, and the second terminal of the third capacitor are all grounded.

[0045] The following is combined Figure 2 The signal acquisition circuit for acquiring analog signals provided in the embodiments of this application will be described in detail.

[0046] Figure 2This is a schematic diagram of a signal acquisition circuit for acquiring analog signals, provided in an embodiment of this application. Figure 2 As shown, the signal acquisition circuit includes a first capacitor C1, a second capacitor C2, a third capacitor C3, a first resistor R1, a second resistor R2, and a third resistor R3.

[0047] In this circuit, the first terminal of the first capacitor C1 is connected to the first terminal of the first resistor R1 to form the input terminal 21 of the signal acquisition circuit, and the second terminal of the first capacitor C1 is grounded (DGND); the second terminal of the first resistor R1, the first terminal of the parallel connection of the second resistor R2 and the second capacitor C2, and the first terminal of the third resistor R3 are connected; the second terminal of the third resistor R3 is connected to the first terminal of the third capacitor C3 to form the output terminal 22 of the signal acquisition circuit; the second terminal of the parallel connection of the second resistor R2 and the second capacitor C2, and the second terminal of the third capacitor C3 are all grounded.

[0048] For example, the second resistor R2 can be used for voltage division, and the third resistor R3 can be used for filtering and current limiting, etc.

[0049] Optionally, the filtering component for filtering the PWM signal includes: a transient suppression diode, a fourth capacitor, a fifth capacitor, a fourth resistor, and a fifth resistor; the first terminals of the transient suppression diode, the fourth resistor, the fourth capacitor, and the fifth resistor are connected to form the input terminal of the signal acquisition circuit for acquiring the PWM signal; the second terminal of the fifth resistor is connected to the first terminal of the fifth capacitor to form the output terminal of the signal acquisition circuit for acquiring the PWM signal; the second terminals of the transient suppression diode, the fourth capacitor, and the fifth capacitor are all grounded; the second terminal of the fourth resistor is connected to the power supply.

[0050] The following is combined Figure 3 The signal acquisition circuit for acquiring PWM signals provided in the embodiments of this application will be described in detail.

[0051] Figure 3 This is a schematic diagram of the signal acquisition circuit for acquiring PWM signals provided in an embodiment of this application. Figure 3 As shown, the signal acquisition circuit includes a transient suppression diode D1, a fourth capacitor C4, a fifth capacitor C5, a fourth resistor R4, and a fifth resistor R5.

[0052] The first terminal of transient suppression diode D1, the first terminal of fourth resistor R4, the first terminal of fourth capacitor C4, and the first terminal of fifth resistor R5 are connected to form the input terminal 31 of the signal acquisition circuit for acquiring PWM signals; the second terminal of fifth resistor R5 is connected to the first terminal of fifth capacitor C5 to form the output terminal 32 of the signal acquisition circuit for acquiring PWM signals; the second terminals of transient suppression diode D1, fourth capacitor C4, and fifth capacitor C5 are all grounded (DGND); the second terminal of fourth resistor R4 is connected to power supply VCC.

[0053] For example, a transient voltage suppression diode is used to perform surge protection processing on the acquired PWM signal output from the accelerator pedal, so that the voltage corresponding to the PWM signal is stabilized within a required voltage range. For example, the required voltage can be 5V.

[0054] For example, the power supply VCC connected to the second terminal of the fourth resistor R4 can be a pull-up power supply to provide a stable voltage for the signal acquisition circuit.

[0055] For example, the voltage provided by the power supply VCC can be 5V.

[0056] Optionally, when both signal acquisition circuits are in normal operation, the control chip in the power domain controller provided in this application embodiment is further used to: obtain the accelerator pedal opening signal based on the output of the dual signal acquisition circuits; and control the vehicle's power motor based on the opening signal.

[0057] It is understood that in the power domain controller provided in this application embodiment, the dual signal acquisition circuits integrated in the power domain controller can verify each other. When both signal acquisition circuits are in normal condition, by comparing the different outputs of the dual signal acquisition circuits, it is possible to quickly detect whether the signal output by the accelerator pedal is abnormal or whether the sensor in the accelerator pedal is faulty, so that the vehicle can enter the safety mode in time, limit the power of the power motor or issue a warning, thereby improving the safety of the vehicle.

[0058] Optionally, the control chip is also used to: determine whether the analog signal and PWM signal output by the dual signal acquisition circuits respectively meet the preset mapping relationship; if they do, determine that the output that meets the accuracy requirements is the accelerator pedal opening signal.

[0059] For example, the preset mapping relationship between analog signals and PWM signals can be that one analog signal value corresponds to one PWM signal range. For instance, when the analog signal is 2.5V, the corresponding PWM signal range can be 0.4-0.43.

[0060] For example, when the PWM signal is within the preset PWM signal range corresponding to the analog signal, it means that the analog signal and the PWM signal satisfy the preset mapping relationship; when the PWM signal is not within the preset PWM signal range corresponding to the analog signal, it means that the analog signal and the PWM signal do not satisfy the preset mapping relationship.

[0061] For example, assuming the preset PWM signal range corresponding to the analog signal is 0.4-0.43 when the analog signal is 2.5V, if the PWM signal is 0.41 when the analog signal is 2.5V, it means that the analog signal and the PWM signal meet the preset mapping relationship; if the PWM signal is 0.39, it means that the analog signal and the PWM signal do not meet the preset mapping relationship.

[0062] For example, the output that meets the accuracy requirements can be a higher accuracy output, that is, confirming the sampling accuracy of the sensors in the accelerator pedal used to sample analog signals and PWM signals respectively, and using the signal collected by the sensor with higher sampling accuracy as the output of the signal acquisition circuit provided in the embodiment of this application as the accelerator pedal opening signal.

[0063] In one possible implementation, when the analog signal and the PWM signal satisfy a preset mapping relationship, the analog signal can be determined as the accelerator pedal opening signal.

[0064] It is understood that in the power domain controller provided in this application embodiment, whether the analog signal and PWM signal output by the dual signal acquisition circuits meet the preset mapping relationship does not conflict with the abnormality of one of the dual signal acquisition circuits. In the power domain controller provided in this application embodiment, when one of the dual signal acquisition circuits is abnormal, the output of the abnormal signal acquisition circuit cannot be acquired. The control chip directly obtains the accelerator pedal opening signal based on the output of the other signal acquisition circuit and controls the vehicle's power motor based on the opening signal. When both dual signal acquisition circuits are in normal condition, the outputs corresponding to the dual signal acquisition circuits can be acquired. The control chip determines whether the analog signal and PWM signal output by the dual signal acquisition circuits meet the preset mapping relationship. If they do, the output that meets the accuracy requirements is determined as the accelerator pedal opening signal, and the vehicle's power motor is controlled based on the opening signal.

[0065] Optionally, if the conditions are not met, a prompt message is output to indicate that the accelerator pedal is faulty and the vehicle's power is limited.

[0066] Specifically, the situations where these conditions are not met are similar to those described above, and will not be repeated here.

[0067] If these conditions are not met, outputting warning messages indicating accelerator pedal malfunction and limited vehicle power can improve vehicle safety and control precision.

[0068] Optionally, the power domain controller provided in this application embodiment may further include a three-phase current acquisition circuit. The input terminal of the three-phase current acquisition circuit is used to input the voltage analog signal acquired by the Hall sensor, and the output terminal of the three-phase current acquisition circuit is connected to the control chip.

[0069] For example, the voltage analog signal can be a voltage signal of 0-5V.

[0070] Figure 4 This is a schematic diagram of the circuit structure of any phase current acquisition circuit in the three-phase current acquisition circuit provided in the embodiments of this application. Figure 4 As shown, the current acquisition circuit includes a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, and an operational amplifier U1.

[0071] In this circuit, the first terminal of the sixth capacitor C6 and the first terminal of the sixth resistor R6 are connected to form the input terminal 41 of the current acquisition circuit. The second terminal of the sixth capacitor C6 is grounded. The second terminal of the sixth resistor R6, the first terminal of the parallel connection of the seventh capacitor C7 and the seventh resistor R7, and the first input terminal 42 of the operational amplifier U1 are connected. The second terminal of the parallel connection of the seventh capacitor C7 and the seventh resistor R7 is grounded. The first terminal of the eighth resistor R8, the first terminal of the parallel connection of the ninth resistor R9 and the eighth capacitor C8, and the second input terminal 43 of the operational amplifier U1 are connected. The second terminal of the eighth resistor R8 is grounded. The output terminal 44 of the operational amplifier U1 is connected to the second terminal of the parallel connection of the ninth resistor R9 and the eighth capacitor C8, and then connected to the input terminal 45 of the hardware overcurrent protection circuit and the first terminal of the tenth resistor R10. The second terminal of the tenth resistor R10 is connected to the first terminal of the ninth capacitor C9 and the first terminal of the eleventh resistor R11, respectively. The second terminal of the ninth capacitor C9 is grounded. The second terminal of the eleventh resistor R11 is connected to the control chip (not shown in the figure). The second terminal of the tenth resistor R10 is connected to the first terminal of the ninth capacitor C9 and then connected to the control chip.

[0072] It should be noted that, Figure 4 The circuit diagram for acquiring the current of any one phase in a three-phase current acquisition circuit is shown. The circuit diagrams for acquiring the current of the other two phases are shown below. Figure 4 Similar to the example shown, it will not be repeated here.

[0073] The three-phase current acquisition circuit integrated in the power domain controller provided in this application embodiment can amplify the voltage over a small range by configuring an operational amplifier in the three-phase current acquisition circuit, thereby improving the acquisition accuracy of the three-phase current, which in turn improves the accuracy of the vehicle's electric drive torque control, further improves the overall vehicle drivability, increases controller efficiency, and reduces the overall vehicle power consumption.

[0074] The control method provided in this application will be described in detail below, taking the control chip in the power domain controller provided in the above embodiment as the execution subject.

[0075] Figure 5 This is a schematic flowchart illustrating a control method provided in an embodiment of this application. Figure 5 As shown, the specific implementation of this control method includes the following steps:

[0076] S501 acquires the output of the dual-channel signal acquisition circuit in the power domain controller.

[0077] For example, a dual-channel signal acquisition circuit can be an analog signal acquisition circuit and a PWM signal acquisition circuit.

[0078] For example, the input terminal of the analog signal acquisition circuit is used to input the analog signal output by the accelerator pedal, and the output terminal of the analog signal acquisition circuit is connected to one pin of the control chip; the input terminal of the PWM signal acquisition circuit is used to input the PWM signal output by the accelerator pedal, and the output terminal of the PWM signal acquisition circuit is connected to another pin of the control chip.

[0079] It is understandable that the outputs of the two signal acquisition circuits acquired by the control chip can be, respectively, the analog signal after the analog signal output from the accelerator pedal is filtered by the filtering component in the analog signal acquisition circuit, and the PWM signal after the PWM signal output from the accelerator pedal is filtered by the filtering component in the PWM signal acquisition circuit.

[0080] It is understood that in the embodiments of this application, both signal acquisition circuits can output the corresponding electrical signals normally, that is, the devices in the accelerator pedal used to acquire analog signals and PWM signals have not malfunctioned.

[0081] S502 obtains the accelerator pedal opening signal based on the output of the dual-channel signal acquisition circuit.

[0082] In one possible implementation, the outputs of two signal acquisition circuits are compared, and it is determined whether the error between the outputs of the two signal acquisition circuits meets a preset error range. If it does, the output of one of the signal acquisition circuits is determined to be the accelerator pedal opening signal.

[0083] S503 controls the vehicle's power motor based on the opening signal.

[0084] For example, the vehicle could be an electric vehicle.

[0085] In this embodiment, the control chip in the power domain controller acquires the output of the dual-channel signal acquisition circuit and obtains the accelerator pedal opening signal based on the output of the dual-channel signal acquisition circuit. Furthermore, it controls the vehicle's power motor based on the opening signal. In this embodiment, the dual-channel signal acquisition circuits integrated in the power domain controller can mutually verify each other. When both signal acquisition circuits are in normal operation, by comparing the different outputs of the two circuits, it is possible to quickly detect whether the accelerator pedal output signal is abnormal or whether the accelerator pedal sensor is faulty. This allows the vehicle to promptly enter a safety mode, limit the power motor power, or issue warnings, thereby improving vehicle safety.

[0086] Optionally, step S502, which obtains the accelerator pedal opening signal based on the output of the dual-channel signal acquisition circuit, can be implemented by: determining whether the analog signal and PWM signal output by the dual-channel signal acquisition circuit satisfy a preset mapping relationship; if they satisfy the mapping relationship, then determining that the output that meets the accuracy requirements is the accelerator pedal opening signal.

[0087] The preset mapping relationship between analog signals and PWM signals is similar to that described above, and will not be repeated here.

[0088] The specific implementation of this embodiment is similar to that described above, and will not be repeated here.

[0089] Optionally, if the conditions are not met, a prompt message is output, which indicates an accelerator pedal malfunction and limited vehicle power.

[0090] For example, when the accelerator pedal malfunctions, outputting a warning message indicating that the vehicle's power is limited can restrict the vehicle's power output and improve vehicle safety.

[0091] It is understood that the above embodiments are for scenarios where both signal acquisition circuits in the power domain controller are in normal condition. The following describes the control method for scenarios where either signal acquisition circuit in the dual signal acquisition circuit is in an abnormal condition, in conjunction with specific embodiments.

[0092] First, we will explain how to determine whether the signal acquisition circuit is in an abnormal state.

[0093] The output terminals of the dual-channel signal acquisition circuits provided in this application embodiment are all connected to the control chip. If the control chip cannot detect the output corresponding to any signal acquisition circuit in the dual-channel signal acquisition circuit, it indicates that the signal acquisition circuit is in an abnormal state. If the control chip can detect the output corresponding to any signal acquisition circuit in the dual-channel signal acquisition circuit, it indicates that both signal acquisition circuits are in a normal state.

[0094] Optionally, the control method provided in this application embodiment further includes, when an abnormality is detected in one of the signal acquisition circuits, obtaining the accelerator pedal opening signal based on the output of the other signal acquisition circuit, and controlling the vehicle's power motor based on the opening signal.

[0095] For example, when the analog signal acquisition circuit is in an abnormal state, the PWM signal output by the detected PWM signal acquisition circuit is used as the accelerator pedal opening signal; when the PWM signal acquisition circuit is in an abnormal state, the analog signal output by the detected analog signal acquisition circuit is used as the accelerator pedal opening signal.

[0096] Figure 6 This is a schematic diagram illustrating the structure of the accelerator pedal opening signal acquisition strategy provided in an embodiment of this application. Figure 6 As shown, when the control chip in the power domain controller cannot detect the output of the analog signal acquisition circuit but can detect the output of the PWM signal acquisition circuit, it determines that the analog signal acquisition circuit is in an abnormal state and the PWM signal acquisition circuit is in a normal state, and determines the output of the PWM signal acquisition circuit as the accelerator pedal opening signal. When the control chip in the power domain controller cannot detect the output of the PWM signal acquisition circuit but can detect the output of the analog signal acquisition circuit, it determines that the PWM signal acquisition circuit is in an abnormal state and the analog signal acquisition circuit is in a normal state, and determines the output of the analog signal acquisition circuit as the accelerator pedal opening signal. When the control chip in the power domain controller can detect the outputs of both the analog signal acquisition circuit and the PWM signal acquisition circuit, it determines that both the analog signal acquisition circuit and the PWM signal acquisition circuit are in a normal state. Based on the analog signal and PWM signal outputs of the analog signal acquisition circuit and the PWM signal acquisition circuit, respectively, it determines whether the analog signal and the PWM signal meet the preset mapping relationship. If they do, the output that meets the accuracy requirements is determined as the accelerator pedal opening signal. If they do not meet the requirement, a warning message indicating an accelerator pedal malfunction and limited vehicle power is output.

[0097] Optionally, when the control chip in the power domain controller cannot detect the outputs of both the analog signal acquisition circuit and the PWM signal acquisition circuit, it is determined that both the analog signal acquisition circuit and the PWM signal acquisition circuit are in an abnormal state, and outputs a prompt message to indicate accelerator pedal failure and limited vehicle power.

[0098] Optionally, embodiments of this application also provide a vehicle, the vehicle and the power domain controller as described in the above embodiments.

[0099] For example, the vehicle provided in the embodiments of this application can be an electric vehicle.

[0100] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the control method described above.

[0101] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the control method described above.

[0102] The aforementioned readable storage medium can be implemented from any type of volatile or non-volatile storage device or a combination thereof, such as Static Random-Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium can be any available medium accessible to a general-purpose or special-purpose computer.

[0103] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the processor and the readable storage medium can exist as discrete components in the device.

[0104] The division of units is merely a logical functional division; in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0105] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0106] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0107] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0108] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0109] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A dynamic domain controller, characterized in that, include: The control chip and dual-channel signal acquisition circuit are integrated into the power domain controller. The dual-channel signal acquisition circuit is used to acquire the analog signal and pulse width modulation (PWM) signal output by the accelerator pedal, respectively. The control chip is connected to the dual-channel signal acquisition circuit and is used to obtain the accelerator pedal opening signal based on the output of the other signal acquisition circuit when an abnormality is detected in one of the signal acquisition circuits, and to control the vehicle's power motor based on the opening signal. The signal acquisition circuit includes a filtering component for signal filtering, wherein the input terminal of the filtering component is the input terminal of the signal acquisition circuit, and the output terminal of the filtering component is connected to the control chip. When both signal acquisition circuits are in normal operation, the control chip is further configured to: determine whether the analog signal and PWM signal output by the dual signal acquisition circuits satisfy a preset mapping relationship; if satisfied, determine that the output meeting the accuracy requirements is the accelerator pedal opening signal, wherein the preset mapping relationship is that one analog signal value corresponds to one PWM signal range; control the vehicle's power motor according to the opening signal; if not satisfied, output a prompt message, which is used to indicate accelerator pedal malfunction and limited vehicle power. The power domain controller also includes a three-phase current acquisition circuit. The input terminal of the three-phase current acquisition circuit is used to input the voltage analog signal acquired by the Hall sensor, and the output terminal of the three-phase current acquisition circuit is connected to the control chip.

2. The dynamic domain controller according to claim 1, characterized in that, The filtering components used to filter the analog signal include: a first capacitor, a second capacitor, a third capacitor, a first resistor, a second resistor, and a third resistor; The first end of the first capacitor is connected to the first end of the first resistor to form the input terminal of the signal acquisition circuit for acquiring the analog signal; The second end of the first resistor, the first end of the parallel connection of the second resistor and the second capacitor, and the first end of the third resistor are connected together. The second end of the third resistor is connected to the first end of the third capacitor to form the output terminal of the signal acquisition circuit used to acquire the analog signal. The second terminal of the first capacitor, the second terminal of the second resistor and the second capacitor connected in parallel, and the second terminal of the third capacitor are all grounded.

3. The dynamic domain controller according to claim 1, characterized in that, The filtering components used to filter the PWM signal include: a transient suppression diode, a fourth capacitor, a fifth capacitor, a fourth resistor, and a fifth resistor; The first terminal of the transient suppression diode, the first terminal of the fourth resistor, the first terminal of the fourth capacitor, and the first terminal of the fifth resistor are connected to form the input terminal of the signal acquisition circuit for acquiring the PWM signal. The second end of the fifth resistor is connected to the first end of the fifth capacitor to form the output terminal of the signal acquisition circuit for acquiring the PWM signal; The second terminal of the transient suppression diode, the second terminal of the fourth capacitor, and the second terminal of the fifth capacitor are all grounded; The second end of the fourth resistor is connected to a power source.

4. A control method, characterized in that, The control method, applied to a control chip in a power domain controller as described in any one of claims 1 to 3, comprises: Obtain the output of the dual-channel signal acquisition circuit in the power domain controller; The accelerator pedal opening signal is obtained based on the output of the dual-channel signal acquisition circuit. The vehicle's power motor is controlled based on the opening signal.

5. The control method according to claim 4, characterized in that, The step of obtaining the accelerator pedal opening signal based on the output of the dual-channel signal acquisition circuit includes: Based on the analog signal and PWM signal output by the dual-channel signal acquisition circuit respectively, determine whether the analog signal and the PWM signal satisfy a preset mapping relationship; If the requirements are met, the output that meets the accuracy requirements is determined to be the accelerator pedal opening signal.

6. The control method according to claim 5, characterized in that, Also includes: If the conditions are not met, a prompt message will be output, which indicates that the accelerator pedal is faulty and the vehicle's power is limited.

7. The control method according to any one of claims 4 to 6, characterized in that, Also includes: When an abnormality is detected in one of the signal acquisition circuits, the opening signal of the accelerator pedal is obtained based on the output of the other signal acquisition circuit, and the vehicle's power motor is controlled based on the opening signal.

8. A vehicle, characterized in that, Includes the vehicle body and the power domain controller as described in any one of claims 1 to 3.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the method as described in any one of claims 4 to 7.

10. A computer program product, characterized in that, include: A computer program that, when executed by a processor, implements the method as described in any one of claims 4 to 7.

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